PT  - JOURNAL ARTICLE
AU  - E. W. Stover
AU  - H. J. Swartz
AU  - T. J. Burr
TI  - Crown Gall Formation in a Diverse Collection of <em>Vitis</em> Genotypes Inoculated With <em>Agrobacterium vitis</em>
AID  - 10.5344/ajev.1997.48.1.26
DP  - 1997 Jan 01
TA  - American Journal of Enology and Viticulture
PG  - 26--32
VI  - 48
IP  - 1
4099  - http://www.ajevonline.org/content/48/1/26.short
4100  - http://www.ajevonline.org/content/48/1/26.full
SO  - Am J Enol Vitic.1997 Jan 01; 48
AB  - Relative levels of crown gall susceptibility were determined in 43 Vitis genotypes by inoculating with a diverse set of Agrobacterium vitis strains and measuring gall size and the proportion of sites forming galls. No genotype was immune to crown gall. In different genotypes, galls formed at 10% to 100% of inoculated sites, and mean gall size ranged from 1.0 to 12 mm when averaged across strains. Significant strain x genotype interactions were observed. Vitis amurensis was especially sensitive to the limited host range strain AG57. Commonly used rootstocks, 3309C, T5C, Riparia Gloire, and 101-14 Mgt, were among the most crown gall resistant genotypes. Vitis flexuosa, V. piasezkii, and V. amurensis, reported not to form galls in an earlier study, were resistant but not immune. Rootstocks 110R, 420A, and Dogridge were highly susceptible.